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REFRACTORY COD IN WASTEWATER

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Refineries chemical, pulp and paper, textile and pharmaceutical plants have refractory COD in their wastewater. Refractory COD is organic compounds that show up in the COD tests as being chemically oxidizable, but are not readily biodegradable. Examples of refractory organics include: some detergents (alkyl benzene sulfonate), and detergent additives including complexing and sequestering agents like EDTA and NTA, halogenated organics including pesticides, PCBs, dioxins and dibenzofurans, polycyclic aromatic hydrocarbons, nitroaromatics including TNT, certain organic acids, aldehydes, certain pharmaceutical active ingredients (PAI's) as well as naturally occurring cellulosic and lignin compounds.
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Document Type: Research Article

Publication date: 2003-01-01

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